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NXP Semiconductors 74LVT574PW,118
- Part No.:
- 74LVT574PW,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVT574PW,118.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,002
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Product details
Overview
74LVT574PW,118 from NXP Semiconductors is a 3.3 V octal D-type flip-flop with 3-state outputs, edge-triggered by a rising clock (CP), and controlled by an active-low output enable (OE). It provides 8-bit registered data latching and bus-isolated output driving for high-speed digital systems. Key confirmed parameters: tPLH/tPHL ≤ 5.4/5.9 ns (VCC = 3.6 V), fmax = 150 MHz, IOL/IOH = ±32 mA, and operates across −40 °C to +85 °C.
For engineers reviewing the 74LVT574PW,118 datasheet, 74LVT574PW,118 pinout, 74LVT574PW,118 application, or 74LVT574PW,118 equivalent, this device serves as a high-speed, 3-state bus interface register in 3.3 V logic domains interfacing with 5 V tolerant inputs - critical for microprocessor data bus buffering, memory address latching, and FPGA I/O expansion where timing precision and bus contention control are required.
Technical Context
The 74LVT574PW,118 implements eight independent D-type flip-flops synchronized to the rising edge of CP, each capturing Dn one setup time before the clock transition. Its 3-state output buffers are fully decoupled from clock operation and enabled/disabled solely by OE, supporting true bus-hold isolation during disable.
It features TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), 5 V-tolerant inputs (VI up to 5.5 V), integrated bus-hold circuitry on all data inputs (IBHH/IBHL = ±75–150 µA at VCC = 3.0 V), and robust ESD protection (HBM > 2000 V, MM > 200 V), enabling live insertion and reliable operation in mixed-voltage backplanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC supply | 2.7 V to 3.6 V - ensures compatibility with standard 3.3 V systems while allowing margin for rail droop. |
| fmax clock frequency | 150 MHz - supports high-throughput data capture in fast microprocessor or FPGA control paths. |
| tPLH / tPHL propagation delay | ≤ 5.4 ns / ≤ 5.9 ns at VCC = 3.6 V - enables sub-7 ns timing budgets for synchronous register-to-bus transfer. |
| IOL / IOH drive strength | ±32 mA - sufficient to drive heavily loaded 3-state buses, MOS memories, or microprocessor data lines without external buffers. |
| tsu / th setup/hold time | 2.0 ns / 0.3 ns at VCC = 3.6 V - tight timing window compatible with modern high-speed logic families. |
| Operating temperature | −40 °C to +85 °C - qualified for industrial-grade embedded and communications equipment environments. |
| Input voltage tolerance | 0 V to 5.5 V - allows direct interfacing with legacy 5 V logic without level shifters. |
Pinout & Package
TSSOP20 package (SOT360-1): plastic thin shrink small outline, 20 leads, body width 4.4 mm, 0.65 mm pitch, exposed pad not electrically connected (die attach only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-low output enable | Asserting LOW enables Q0–Q7 outputs; HIGH places all outputs in high-impedance OFF-state, independent of CP state. |
| 2–9 (D0–D7) | Data inputs | Asynchronous inputs sampled on rising CP edge; include bus-hold circuitry to retain last valid logic state when floating. |
| 10 (GND) | Ground reference | Primary 0 V return path for logic and output drivers; must be low-impedance for noise immunity and timing stability. |
| 11 (CP) | Clock pulse input | Rising-edge sensitive; triggers simultaneous capture of all Dn inputs into respective flip-flops; requires clean, monotonic transitions. |
| 12–19 (Q0–Q7) | Registered 3-state outputs | Reflect stored Dn values when OE = LOW; tri-stated (Z) when OE = HIGH - prevents bus contention in shared-data applications. |
| 20 (VCC) | Supply voltage | 3.3 V nominal power rail; bypassing with 100 nF ceramic capacitor near pin is mandatory for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bus-hold inputs | Eliminates need for external pull-up/down resistors on unused Dn pins, reducing BOM count and board space. |
| 5 V-tolerant inputs | Accepts 0–5.5 V input signals while powered from 3.3 V, enabling seamless integration into mixed-voltage systems. |
| Live insertion/extraction support | Robust ESD protection (HBM > 2000 V) and power-up 3-state behavior prevent damage or bus glitches during hot-swap operations. |
| Power-up reset & 3-state | Outputs default to high-impedance at power-on, preventing undefined bus states during system initialization sequences. |
| Latch-up immunity | JESD78 Class II (>500 mA) protection ensures reliability under transient overvoltage or ground bounce conditions. |
Applications
| Microprocessor Data Bus Interface | FPGA I/O Expansion Buffer |
|---|---|
|
Use Scenario: Interfacing a 32-bit microprocessor data bus to peripheral devices with asynchronous timing or slower response. IC Role / Device Role / Timing Role: Acts as a registered bus transceiver - latches processor write data on CP rise and presents it to peripherals via 3-state outputs controlled by OE. Use Value: Prevents bus contention during read-modify-write cycles and isolates peripherals during idle periods, improving signal integrity and system determinism. |
Use Scenario: Extending limited FPGA I/O pins to drive multiple external sensors or displays requiring parallel data handshaking. IC Role / Device Role / Timing Role: Serves as an output latch - captures parallel data from FPGA GPIOs on CP and holds steady outputs until next update, decoupling FPGA timing from peripheral latency. Use Value: Enables deterministic output timing independent of FPGA internal clock domain, simplifying timing closure and reducing routing complexity. |
| Memory Address Latching | Industrial Control Backplane Register |
|
Use Scenario: Latching address bits for SRAM or flash memory access in systems where address and data share a multiplexed bus. IC Role / Device Role / Timing Role: Functions as an address register - samples address lines before memory access strobe and holds stable during full memory cycle duration. Use Value: Eliminates need for dedicated address demultiplexing logic; ensures glitch-free address presentation to memory chips even with variable bus timing. |
Use Scenario: Centralized I/O conditioning in modular PLC or motion controller backplanes with shared 3-state data lanes. IC Role / Device Role / Timing Role: Provides isolated, registered data staging between CPU module and field I/O modules, with OE coordinated via backplane control lines. Use Value: Enables hot-swappable I/O modules without disrupting CPU communication, supported by bus-hold and live-insertion design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop with 3-state output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC574APWR | Lower drive (±24 mA), wider VCC range (1.65–3.6 V), no bus-hold, same TSSOP20 footprint. | Requires external pull-ups on unused inputs; better suited for ultra-low-power or wide-supply designs where bus-hold is unnecessary. | Select when lower static current (ICC ≈ 10 µA) and broader voltage flexibility outweigh bus-hold convenience. |
| 74LVTH574PW,118 | Higher drive (±64 mA), faster tPLH/tPHL (≤4.2/4.7 ns), identical pinout and bus-hold, same temperature range. | Delivers higher fan-out and tighter timing margins in demanding high-speed bus applications. | Select when driving >32 mA loads or requiring sub-4.5 ns propagation delays - drop-in upgrade with no layout change. |
Compared with SN74LVC574APWR, the 74LVT574PW,118 offers superior bus-hold functionality and higher output drive but consumes more supply current; compared with 74LVTH574PW,118, it trades 32 mA drive and 5.4 ns delay for lower power and cost - making it optimal for industrial bus interfaces where robustness and 5 V tolerance are prioritized over peak speed.
Availability
74LVT574PW,118 is available at Aetrix Electronics and suitable for industrial control backplanes, FPGA I/O expansion, microprocessor data bus interfacing, and memory address latching requiring stable component supply and long-term manufacturability.
Supply support for 74LVT574PW,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in high-performance logic and interface ICs.
The 74LVT574PW,118 belongs to NXP's LVT (Low-Voltage TTL) logic family, designed specifically for high-speed, 3.3 V system interfacing with 5 V tolerance and bus-hold capability - targeting robust digital subsystems in industrial and communications infrastructure.
FAQ
What is the maximum clock frequency supported by the 74LVT574PW,118?
The 74LVT574PW,118 supports a maximum clock frequency of 150 MHz under recommended operating conditions (VCC = 3.0 V to 3.6 V). This specification is validated across the full industrial temperature range (−40 °C to +85 °C) and assumes proper signal integrity, load capacitance ≤50 pF, and clean power supply decoupling. Performance may degrade outside these conditions.
Does the 74LVT574PW,118 have built-in bus-hold functionality?
Yes, the 74LVT574PW,118 includes integrated bus-hold circuitry on all eight D-inputs (D0–D7). This feature maintains the last valid logic state on floating inputs without external pull-up or pull-down resistors, reducing component count and improving reliability in systems with unterminated or intermittently connected data lines.
Can the 74LVT574PW,118 interface directly with 5 V logic systems?
Yes, the 74LVT574PW,118 accepts input voltages up to 5.5 V while operating from a 3.3 V supply, making it fully 5 V-tolerant on all inputs (D0–D7, CP, OE). Outputs swing rail-to-rail (0 V to VCC) and are not 5 V-compatible, so external level translation is required for driving 5 V loads.
What is the power-up behavior of the 74LVT574PW,118 outputs?
At power-up, the 74LVT574PW,118 outputs enter a high-impedance (3-state) condition regardless of OE or CP state, preventing bus contention during system initialization. This behavior is guaranteed by internal power-on reset circuitry and is independent of supply ramp rate or sequence.
Is the 74LVT574PW,118 pin-compatible with the 74LVTH574PW,118?
Yes, the 74LVT574PW,118 and 74LVTH574PW,118 share identical TSSOP20 pinout (SOT360-1), pin functions, and package dimensions. They differ only in output drive strength (±32 mA vs. ±64 mA) and propagation delay (5.4 ns vs. 4.2 ns), enabling direct substitution where higher drive or speed is not required.
74LVT574PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 5.9ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Current - Quiescent (Iq):
- 190 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LVT574PW,118 FAQ
1.How can I place an order for 74LVT574PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT574PW,118 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74LVT574PW,118 reliable?
The price and inventory of 74LVT574PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT574PW,118 is usually 5 days.
3.What payment methods are accepted for 74LVT574PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT574PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT574PW,118?
74LVT574PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT574PW,118 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74LVT574PW,118?
For technical support, including 74LVT574PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT574PW,118 requirements.
6.How does Aetrix verify that 74LVT574PW,118 is sourced from the original manufacturer or authorized distributors?
All 74LVT574PW,118 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74LVT574PW,118 meets industry standards.
7.What is the process for return or replacement of 74LVT574PW,118?
All 74LVT574PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT574PW,118, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74LVT574PW,118 part is unused and in its original packaging.
Return procedure for 74LVT574PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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